5 Written questions
5 Matching questions
- Trace Elements
- Sublittoral Zone
- a The raising of aquatic plants and animals for human use or consumption.
- b The shallow benthic zone that most organisms live in; located on the continental shelves and is populated by organisms such as sea stars, brittle stars, and sea lilies.
- c Elements that exist in very small amounts.
ex: gold, zinc, and phosphorus.
- d A method of desalination where ocean water is heated to remove salt. Heat causes liquid water to evaporate and leave dissolved salts behind. When the water vapor condenses, the result is pure fresh water.
- e A measure of the amount of dissolved salts in a given amount of liquid. It can be written as salinity = 35 parts per thousand, or 35%.
5 Multiple choice questions
- Has no sunlight because it begins at a depth of 4,000 meters and extends to a depth of 6,000 meters.
organisms that live there: sponges and worms
- A popular method for desalinating ocean water. It includes the use of special membranes that allow water under high pressure to pass through and that block the dissolved salts.
- The mass of mostly microscopic organisms that float or drift freely in the waters of aquatic (freshwater and marine) environments.
- The region of an ocean or body of fresh water above the benthic zone.
- The movement of deep, cold, and nutrient-rich water to the surface.
5 True/False questions
Intertidal Zone → The area of the pelagic zone above the continental shelves. Has abundant sunlight, moderate temperatures, and relatively low water pressure.
Freezing → A method of desalination where water is frozen. Then the first ice crystals that form do not contain salt. The ice can be removed and melted to obtain fresh water.
Neritic Zone → The region of an ocean or body of fresh water above the benthic zone.
Desalination → A method of desalination where ocean water is heated to remove salt. Heat causes liquid water to evaporate and leave dissolved salts behind. When the water vapor condenses, the result is pure fresh water.
Pack Ice → A floating layer of sea ice that completely covers an area of the ocean surface.